It did however, over time, become normal. I got used to being me and referring to my house, my bed, my car. In part, it was rebellion. Maybe even pride. Like a 'watch-me-do-it-alone' attitude. I hated being alone, going alone, doing alone, but I was slowly adjusting to that and in small ways (very small ways) loved the freedom to choose, like what I watched on TV.
Thing is, now that I am married again, I am finding that I have to adjust back again to us, we, ours. I love it, but for some reason it has taking a while for me to fully get my head around it. Finally, gladly it is our house, our car, our bed! My head will just take a minute to catch up.